Home / 15,499.27-21,389.16-8,425.81

Finding the Fourth Proportional to 15,499.27, 21,389.16 and 8,425.81

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Solution

The fourth proportional to 15,499.27, 21,389.16 and 8,425.81 is: 11,627.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,499.27 : 21,389.16 = 8,425.81 : x
  2. Step 2: Convert to fraction form
    15,499.27/21,389.16 = 8,425.81/x
  3. Step 3: Cross multiply
    15,499.27x = 21,389.16 × 8,425.81
  4. Step 4: Simplify right side
    15,499.27x = 180,220,998.22
  5. Step 5: Solve for x
    x = 180,220,998.22/15,499.27
  6. Step 6: Final answer
    x = 11,627.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.